CELL THEORY Flashcards
The primary building blocks of life.
cell
They come in all shapes and sizes.
cell
Some cells are so small and can only be observed under a _____. But some are large enough to be held, like _____!
microscope
eggs
The smallest cell is the
_________ ________,
a disease-causing bacteria
in birds.
Mycoplasma gallicepticum
Mycoplasma gallicepticum can be as small as _______
0.3 nanometers
The largest cell is the
_____ ___, which
can reach up to _ _____ in diameter.
ostrich’s egg
6 inches
Cells were first recorded by
____ ______ around _____.
Robert Hooke
1665
Robert Hooke was improving the design of a microscope when he decided to observe a piece of ____.
cork
[Discovery of Cells]
Up close, Hooke saw _____
structures. These are what we
now know as ____ _____.
box-like
cell walls
[Proponents of Cell Theory]
____ ___ ______, in 1674, observed the __ ____ using the __________ ______.
Anton van Leeuwenhoek
living cell
Leeuwenhoek Microscope
[Proponents of Cell Theory]
Years later, ____ _____, in 1883 successfully discovered the
nucleus.
Robert Brown
[Proponents of Cell Theory]
Years later, Robert Brown, in 1883 successfully discovered the
_____.
nucleus
[Proponents of Cell Theory]
In 1834, ____ ______, a French biologist discovered the
fluid content of the cell, which he called as sarcode.
Felix Dujardin
[Proponents of Cell Theory]
In 1834, Felix Dujardin, a French biologist discovered the
____ content of the cell, which he called as _______.
fluid
sarcode
[Proponents of Cell Theory]
_____ _______, a German botanist, revealed in
1838 that all plant tissue was made up of cells.
Matthias Schleiden
[Proponents of Cell Theory]
Matthias Schleiden, a German botanist, revealed in
1838 that all ___ ______ was made up of cells.
plant tissue
[Proponents of Cell Theory]
In the year 1839, __ ___ ________, or __ ______, named the fluid content of cell as protoplasm.
Jan Evangelista Purkinje
J.E. Purkinje
[Proponents of Cell Theory]
In the year 1839, Jan Evangelista Purkinje, or J.E. Purkinje,
named the fluid content of cell as ______.
protoplasm
[Proponents of Cell Theory]
In 1839, ___ _______ identified animal cells as
being comparable to plant cells. He and Schwann are
thus credited with the unifying cell theory that ushered in
a new era of productive exploration in cell biology.
Theodor Schwann
[Proponents of Cell Theory]
In 1839, Theodor Schwann identified __ _____ as
being comparable to plant cells. He and Schwann are
thus credited with the unifying cell theory that ushered in
a new era of productive exploration in cell biology.
animal cells
[Proponents of Cell Theory]
In 1845, ___ ____ _____ proposed that cell is the basic unit of life.
Carl Heinrich Braun
[Proponents of Cell Theory]
In 1845, Carl Heinrich Braun proposed that cell is the
_______________.
basic unit of life
[Proponents of Cell Theory]
A doctor and pathologist, ___ ______ in the year 1858 recognized that all cells came from pre-existing cells. He proposed the Theory of Biogenesis.
Rudolf Virchow
[Proponents of Cell Theory]
A doctor and pathologist, Rudolf Virchow in the year 1858 recognized that all cells came from _______ ____. He proposed the ______ __ ______
pre-existing cells
Theory of Biogenesis.
